Screen resolution and image quality



  • I am new to building apps from source code in Mac and to QT, so this may seem very basic. I have a MacBook Pro running OS X Mavericks with a retina screen (3360 x 2100). QtDesigner 4.8.6 and other apps I have built on Qt 4.8 (such as QGIS) have graphic objects with a very low resolution -- like older displays. I am wondering if this has anything to do with my configuration when I installed Qt Designer from source code? Perhaps a ./configure setting? Or is this another problem? What can I try?

    I am particularly keen to improve the display quality of QGIS as this is a mapping app and I need to see my output nicely on screen.

    Thank you to all this who can help.



  • What do you mean by low resolution? Do you mean the windows are smaller when the app is opened? Do you mean they appear fuzzy?

    As far as I know there is nothing Qt does that has any affect on resolution. That is between your OS/vid card/monitor.

    My guess on low resolution looking stuff is scaling from your monitor or video card. It makes things appear fuzzy and just generally crappy.

    I'm running a 4k (3840x2160 res) monitor and all my Qt stuff is just as clean and crisp as any other application. If I turn on scaling of any sort then things get blurry/grainy.


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